2 Part Question About Reverse Osmosis?

max316420

max316420

Well-Known Member
Ok first question is, When using a ro system and the filters get older can that have an effect on waters PH? Second question, I'm using a 55 gallon barrel for my water with a sump pump with hose attached which warms the water up ( not drastically ) but could water temp change effect waters ph?
 
mr.smileyface

mr.smileyface

Well-Known Member
Pure h2o water is PH 7. Anything added to it will either raise or lower it.
The only way a ro would have anything to do with Ph, is if it wasnt doing its job.
 
woodsmaneh!

woodsmaneh!

Well-Known Member
max316420 said:
Ok first question is, When using a ro system and the filters get older can that have an effect on waters PH? Second question, I'm using a 55 gallon barrel for my water with a sump pump with hose attached which warms the water up ( not drastically ) but could water temp change effect waters ph?
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It should not effect the pH if your filters are dirty, now pH is very reactive so many things can change it, but general dirty filters just slow the system down.

Yes. temperature does affect the pH of solutions, pH is -log[H(+)] and so anything that affects the concentration of hydrogen ions in the solution will affect the pH.

The easiest example to look at is pure water which has a pH of 7 at 25 Celsius, a pH of about 6.6 at 50 Celsius and a pH of about 7.5 at zero Celsius. This is because the dissociation of pure water, H2O <=> H(+) + OH(-) is an endothermic process so heating it up increases the dissociation so increasing the hydrogen ion concentration at 50 C the concentration of H(+) is about 2.34 x 10(-7) compared to 1 x 10(-7) at 25 C and about 0,33 x 10(-7) at zero C

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